// Copyright 2022 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#pragma once

#include "pw_fuzzer/fuzzed_data_provider.h"
#include "pw_random/random.h"

namespace pw::random {

// FuzzerRandomGenerator is intended to be used as the generator in fuzz tests.
// It returns data from the fuzzer input.
class FuzzerRandomGenerator : public RandomGenerator {
 public:
  FuzzerRandomGenerator(FuzzedDataProvider* provider) : provider_(provider) {}
  void Get(ByteSpan dest) override {
    provider_->ConsumeData(dest.data(), dest.size());
  }

  void InjectEntropyBits(uint32_t /*data*/,
                         uint_fast8_t /*num_bits*/) override {}

 private:
  FuzzedDataProvider* provider_;
};

}  // namespace pw::random
